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    <title>Document</title>
    <script>
        console.log('pink老师'+ 18);
        console.log('pink老师'+ 18 + '岁');
        var age = 19;
        console.log('pink老师age岁');
        //我们变量不要写到字符串里，是通过 和 字符串相连的方式实现的
        console.log('pink老师' + age + '岁');
        //变量和字符串相连的口诀：引引加加
    </script>
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